[Paul Erlich, private communication with Joe Monzo]
For a unison-vector n/d [n = numerator, d = denominator, of a musical frequency ratio], which is a ratio-of R, the heuristic for error is | n - d | / ( R * log(R) ) .
. . . . . . . . .
[Joe Monzo]
This formula incorporates heuristic complexity, which see.
